Mixed-Width Port Configurations - Altera Cyclone V Device Handbook

CV-52002
2013.05.06

Mixed-Width Port Configurations

The mixed-width port configuration is supported in the simple dual-port RAM and true dual-port RAM
memory modes.
Note: MLABs do not support mixed-width port configurations.
Related Information
Internal Memory (RAM and ROM) User Guide
Provides more information about dual-port mixed width support.
M10K Blocks Mixed-Width Configurations
Table 2-7: M10K Block Mixed-Width Configurations in Simple Dual-Port RAM Mode
Read Port
8K x 1
8K x 1 Yes
4K x 2 Yes
2K x 4 Yes
2K x 5 —
1K x 8 Yes
1K x 10 —
512 x 16 Yes
512 x 20 —
256 x 32 Yes
256 x 40 —
Table 2-8: M10K Block Mixed-Width Configurations in True Dual-Port Mode
Port B
8K x 1
4K x 2
2K x 4
2K x 5
1K x 8
1K x 10
512 x 16
Embedded Memory Blocks in Cyclone V Devices
Send Feedback
4K x 2 2K x 4
Yes Yes
Yes Yes
Yes Yes
— —
Yes Yes
— —
Yes Yes
— —
Yes Yes
— —
8K x 1 4K x 2 2K x 4
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
— —
Yes Yes Yes
— —
Yes Yes Yes
Write Port
2K x 5 1K x 8 1k x 10
— Yes —
— Yes —
— Yes —
Yes — Yes
— Yes —
Yes — Yes
— Yes —
Yes — Yes
— Yes —
Yes — Yes
Port A
2K x 5 1K x 8
— Yes
— Yes
— Yes
— Yes —
— Yes
— Yes —
— Yes
Mixed-Width Port Configurations
512 x 16 512 x 20 256 x 32
Yes — Yes
Yes — Yes
Yes — Yes
— Yes —
Yes — Yes
— Yes —
Yes — Yes
— Yes —
Yes — Yes
— Yes —
1K x 10 512 x 16
— Yes
— Yes
— Yes
Yes —
— Yes
Yes —
— Yes
2-9
256 x 40
—
—
—
Yes
—
Yes
—
Yes
—
Yes
512 x 20
—
—
—
Yes
—
Yes
—
Altera Corporation